Click&listen for Spotify

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Click&listen for Spotify",
  "description": "Search for songs and listen them in your browser.",
  "version": "1.0.1",
  "background": {
    "scripts": [
      "jquery-3.1.1.min.js",
      "background.js",
      "bootstrap.min.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "icon_16.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon_48.png",
    "default_popup": "popup.html",
    "default_title": "Click here!"
  },
  "permissions": [
    "identity",
    "activeTab",
    "https://accounts.spotify.com/*",
    "https://ajax.googleapis.com/"
  ]
}